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How to Setup EtherChannel

If you’ve ever run out of bandwidth on an up link you know you maybe thinking you need to setup an EtherChannel or PortChannel. But have you ever done it or are you wondering how to setup an etherchannel?

This video does a great job of showing you how setup an etherchannel connection within your environment

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6 comments

  1. I have a 3560 and 2960 and the ip address command is not there. Did cisco change that?

  2. I need the configuration of building of an Ether channel…

    • Pradeep,

      Thanks for your comment. Setting up an etherchannel is fairly straight forward. Connecting between two Cisco switches you first create a port channel interface. Here is the config for that:

      <code>

      Switch-A>#(config) interface Port-channel1

      Switch-A>#(config) description Connected to Switch-B

      Switch-A>#(config) ip address 10.1.1.1 255.255.255.254

      Switch-A>#(config) no ip redirects

      Switch-A>#(config) no ip unreachables

      Switch-A>#(config) no ip proxy-arp

      Switch-A>#(config) logging event link-status

      Switch-A>#(config) logging event bundle-status

      !

      Switch-B>#(config) interface Port-channel1

      Switch-B>#(config) description Connected to Switch-A

      Switch-B>#(config) ip address 10.1.1.2 255.255.255.254

      Switch-B>#(config) no ip redirects

      Switch-B>#(config) no ip unreachables

      Switch-B>#(config) no ip proxy-arp

      Switch-B>#(config) logging event link-status

      Switch-B>#(config) logging event bundle-status

      </code>

      Next add your interfaces to the port-channel. This would be done on both switches.

      <code>

      interface GigabitEthernet5/4

      description EtherChannel

      no ip address

      no ip redirects

      no ip unreachables

      no ip proxy-arp

      channel-group 1 mode desirable

      !

      interface GigabitEthernet5/5

      description EtherChannel

      no ip address

      no ip redirects

      no ip unreachables

      no ip proxy-arp

      channel-group 1 mode desirable

      </code>

      In the example above we've put tow gigabit interfaces into one port-channel (EtherChannel)

      And thats about it… let me know if you still have questions and thanks again!

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